Preheater for melting solder



FIG. 1 is a perspective view of a preheater for melting solder;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a sectional view thereof, taken along line 8-8 in FIG. 2; and,

FIG. 9 is a sectional view thereof, taken along line 9-9 in FIG. 4.

The portion shown by broken lines is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a preheater for melting solder, as shown and described. 